Rotational joint mechanism and medical equipment

Abstract

The embodiment of the utility model provides a rotational joint mechanism and medical equipment. The rotational joint mechanism includes: a first member; the second component is inserted into the first component and can rotate relative to the first component with the rotating axis as the axis, and one of the first component and the second component is provided with a spiral groove surrounding the rotating axis by at least one circle; one end of the sliding block is inserted into the spiral groove; the other one of the first component and the second component is connected with the other end of the sliding block; one end of the sliding block slides along the spiral groove when the first component and the second component rotate relatively. According to the rotating joint mechanism provided by the embodiment of the utility model, the first component and the second component can respectively rotate around the rotating axis by 360 degrees. And due to the limiting effect of the first spiral groove wall and the second spiral groove wall of the spiral groove, the sliding block cannot continuously rotate in one direction, so that the wire harness cannot be wound and broken, and the reliability of the rotating joint mechanism is high.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a rotating joint mechanism and a medical device having the same. Background Technology

[0002] Ultrasound diagnostic equipment is a commonly used instrument in the medical field. It can diagnose certain diseases based on the principles of ultrasound, thus aiding in subsequent treatment. Therefore, ultrasound diagnostic equipment is an indispensable and important medical device in hospital clinics, and its application in clinical practice is increasing.

[0003] Ultrasound diagnostic equipment may include a display, a control panel, and a rotation joint mechanism. The rotation joint mechanism connects the display and the control panel to allow relative rotation between them. Specifically, the rotation joint mechanism has a groove and a protrusion. The groove extends about a rotation axis. The protrusion is rotatably inserted into the groove to allow rotation of the display and control panel. This allows users (e.g., clinicians) to adjust the position of the display and control panel as needed, thereby facilitating operation and improving the user experience.

[0004] Since a wiring harness is inevitably connected between the monitor and the control panel, a limiting structure must be installed on the groove to prevent the harness from tangling and breaking during rotation. This limiting structure prevents the protrusion from rotating a full circumference relative to the groove. This avoids the wiring harness from tangling and breaking due to excessive rotation. However, precisely because of the limiting structure, the monitor and control panel cannot rotate a full 360 degrees, thus restricting their position and affecting usability. Utility Model Content

[0005] To at least partially address the problems existing in the prior art, according to one aspect of the present invention, a rotary joint mechanism is provided. The rotary joint mechanism includes: a first component; a second component, the second component being inserted into the first component and rotatable relative to the first component about a rotation axis, one of the first and second components having a helical groove surrounding the rotation axis at least once; and a slider, one end of the slider being inserted into the helical groove; the other of the first and second components being connected to the other end of the slider; and one end of the slider sliding along the helical groove when the first and second components rotate relative to each other.

[0006] For example, the other of the first component and the second component is provided with a guide groove extending along the rotation axis, and the other end of the slider is inserted into the guide groove. When the first component and the second component rotate relative to each other, the other end of the slider slides along the guide groove.

[0007] For example, the first component includes an outer sleeve and a rotating member inserted into the outer sleeve, the rotating member being sleeved between the outer sleeve and the second component, and at least a portion of the guide groove being disposed on the outer sleeve.

[0008] For example, the outer sleeve is provided with a groove, the rotating part includes a bushing, the bushing is provided with an opening communicating between the groove and the spiral groove, and the groove and the opening are configured as guide grooves.

[0009] For example, the opening includes a large segment facing the chute and a small segment connecting the large segment and the spiral groove, with a stepped surface formed between the large segment and the small segment. The slider includes a head and a tail connected to the head. The head abuts between the groove wall of the chute and the stepped surface, and the tail passes through the small segment. One end of the slider is the end of the tail facing away from the head.

[0010] For example, the rotating component includes two rolling bearings, and the slider is located between the two rolling bearings along the rotation axis.

[0011] For example, one of the first component and the second component is provided with a first mounting groove that allows one end of the slider to be mounted from the outside to the spiral groove; and / or the other of the first component and the second component is provided with a second mounting groove that allows the other end of the slider to be mounted from the outside to the guide groove.

[0012] For example, along the rotation axis, the length of the end of the slider that mates with the helical groove is less than the length of the other end of the slider that mates with the guide groove.

[0013] For example, the rotary joint mechanism further includes a friction assembly sleeved on the second component, the friction assembly being connected to the end of the first component along the rotation axis direction.

[0014] For example, the second component includes a rotating shaft and a base protruding outward from the outer peripheral surface of the rotating shaft. The rotating shaft is inserted into the first component. A spiral groove or guide groove is provided on the outer peripheral surface of the rotating shaft. A friction assembly is connected between the base and one end of the first component along the rotation axis.

[0015] For example, the friction assembly includes a first thrust bearing assembly, and the rotating joint mechanism further includes a second thrust bearing assembly, a pressure plate, and an adjusting member. The pressure plate and the base are located on both sides of the first component along the rotation axis. The second thrust bearing assembly is sleeved on the rotating shaft and is connected between the pressure plate and the other end of the first component along the rotation axis. The adjusting member is used to adjust the force of the pressure plate pressing the first thrust bearing assembly and the second thrust bearing assembly.

[0016] For example, the adjusting member includes a threaded fastener, and a threaded hole is provided on the end of the shaft facing the pressure plate. The threaded fastener passes through the pressure plate and is threadedly connected to the threaded hole.

[0017] For example, a helical groove is provided on the outer circumferential surface of the rotating shaft, and the threaded hole is spaced apart from the helical groove along the rotation axis.

[0018] For example, the first thrust bearing assembly includes a first thrust bearing and a first support plate, and the base, the first thrust bearing, the first support plate and the first component are connected in sequence along the rotation axis; and / or the second thrust bearing assembly includes a second thrust bearing and a second support plate, and the pressure plate, the second thrust bearing, the second support plate and the first component are connected in sequence along the rotation axis.

[0019] For example, the first component is provided with a socket and the wall of the socket is provided with a guide groove, and the second component is provided with a rotating shaft that is inserted into the socket and the outer peripheral surface of the rotating shaft is provided with a spiral groove.

[0020] For example, the rotary joint mechanism further includes a first connector and a second connector, the first connector being connected to a first component and used to connect a first external component, and the second connector being connected to a second component and used to connect a second external component.

[0021] For example, the first connector includes a first annular disk protruding outward from the outer periphery of the first component and surrounding the axis of rotation, the first annular disk being used to connect to the first external component; the second connector includes a second annular disk protruding outward from the outer periphery of the second component and surrounding the axis of rotation, the second annular disk being used to connect to the second external component; the first annular disk is parallel to the second annular disk. Alternatively, the first connector includes a first bracket, one end of which is connected to the first component and the other end of which is used to connect to the first external component; the second connector includes a second bracket, one end of which is connected to the second component and the other end of which is used to connect to the second external component.

[0022] According to another aspect of the present invention, a medical device is also provided. The medical device includes any of the above-described rotary joint mechanisms.

[0023] The rotary joint mechanism provided in this embodiment allows the first and second components to rotate 360 ​​degrees around their respective axes. This allows the components connected to the first and second components (e.g., the first and second external connectors) to be rotated to any desired position according to usage requirements, facilitating operation and improving the user experience. Furthermore, due to the limiting effect of the first and second spiral groove walls, the slider cannot rotate continuously in one direction, preventing wire tangling and breakage, thus ensuring high reliability of the rotary joint mechanism.

[0024] This utility model description introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0025] The advantages and features of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0026] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0027] Figure 1 This is a perspective view of a rotary joint mechanism according to an exemplary embodiment of the present invention;

[0028] Figure 2 for Figure 1 A cross-sectional view of the rotary joint mechanism shown in the figure;

[0029] Figure 3 for Figure 1 The figure shows a perspective view of the rotating joint mechanism, in which the pressure plate and adjusting member have been removed;

[0030] Figure 4 for Figure 3 A perspective view of the second component and the second connector shown in the figure;

[0031] Figure 5 for Figure 3 A perspective view of the partial structure of the first component and the second connector shown in the figure;

[0032] Figure 6 for Figure 3 The three-dimensional view of the bushing shown in the figure;

[0033] Figure 7 for Figure 3 A 3D view of the slider shown in the image;

[0034] Figure 8 This is a perspective view of a rotary joint mechanism according to another exemplary embodiment of the present invention;

[0035] Figure 9 for Figure 8 A cross-sectional view of the rotary joint mechanism shown in the figure; and

[0036] Figure 10 for Figure 9 The image shows a partial enlarged view of the rotary joint mechanism.

[0037] The above figures include the following reference numerals:

[0038] 100. First component; 110. Guide groove; 120. Outer sleeve; 121. Slide groove; 130. Rotating component; 140. Bushing; 150. Opening; 151. Large-size section; 152. Small-size section; 153. Stepped surface; 160. Insertion hole; 170. Second mounting groove; 200. Second component; 210. Spiral groove; 211. First spiral groove wall; 212. Second spiral groove wall; 220. First mounting groove; 230. Rotating shaft; 231. Threaded hole; 240. Base; 300. Slider; 301. One end; 302. The other end; 310. Head; 320. Tail ; 410, First thrust bearing assembly; 411, First thrust bearing; 412, First support plate; 420, Second thrust bearing assembly; 421, Second thrust bearing; 422, Second support plate; 430, Pressure plate; 440, Adjusting component; 500, First connecting component; 510, First annular disc; 511, First annular disc through hole; 512, Screw; 520, First bracket; 521, First bracket through hole; 600, Second connecting component; 610, Second annular disc; 611, Second annular disc through hole; 620, Second bracket; 621, Second bracket through hole; 700, Wire harness hole. Detailed Implementation

[0039] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0040] According to one aspect of the present invention, a rotary joint mechanism is provided. The rotary joint mechanism can connect a first external member and a second external member, thereby allowing the first and second external members to rotate respectively via the rotary joint mechanism. The rotary joint mechanism can be applied to any suitable device, including but not limited to medical devices. Therefore, according to another aspect of the present invention, a medical device is also provided. The medical device includes, but is not limited to, ultrasound diagnostic equipment. The rotary joint mechanism and medical device of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] like Figure 1-7 As shown, the rotating joint mechanism may include a first component 100, a second component 200, and a slider 300.

[0042] The first component 100 can be used to directly or indirectly connect to the first external component. The first external component includes, but is not limited to, a display. Exemplarily, the rotating joint mechanism may also include a first connector 500. The first connector 500 can be connected to the first component 100 by any suitable method such as welding, connector joining, or integral molding. The first connector 500 can be used to connect to the first external component. The structure of the first connector 500 can be varied, including but not limited to a bracket, a connecting seat, or a snap-fit.

[0043] The second component 200 can be used to directly or indirectly connect to the second external component. The second external component includes, but is not limited to, a control panel. Exemplarily, the rotating joint mechanism may also include a second connector 600. The second connector 600 can be connected to the second component 200 by any suitable method such as welding, connector joining, or integral molding. The second connector 600 can be used to connect the second external component. The structure of the second connector 600 can be varied, including but not limited to a bracket, connecting seat, or snap-fit.

[0044] The second component 200 can be inserted into the first component 100, thereby allowing it to rotate relative to the first component 100 about the rotation axis PP. Specifically, the first component 100 may be provided with a socket 160. The second component 200 may be provided with a rotating shaft 230. The rotating shaft 230 can be inserted into the socket 160, thereby allowing it to rotate relative to the socket 160 about the rotation axis PP. One of the first component 100 and the second component 200 may be provided with a helical groove 210. The helical groove 210 can surround the rotation axis PP at least once. That is, the angle of rotation of the helical groove 210 around the rotation axis PP can be at least 360 degrees, for example, 360 degrees, 365 degrees, 370 degrees or more. Along the extending direction of the helical groove 210, the helical groove 210 may have a first helical groove wall 211 and a second helical groove wall 212 disposed opposite to each other. Along the direction of the rotation axis PP, the first helical groove wall 211 and the second helical groove wall 212 may be spaced apart.

[0045] One end 301 of the slider 300 can be inserted into the helical groove 210. The first helical groove wall 211 and the second helical groove wall 212 can limit the movement of one end 301 of the slider 300. The other of the first component 100 and the second component 200 can be connected to the other end 302 of the slider 300. When the first component 100 and the second component 200 rotate relative to each other, one end 301 of the slider 300 can slide along the helical groove 210.

[0046] A wire harness can be connected between the first and second external connectors. The wire harness can be connected via a rotating joint mechanism. Exemplarily, the rotating joint mechanism may be provided with a wire harness hole 700. The wire harness can pass through the wire harness hole 700, thereby enabling connection between the first and second external connectors. The wire harness hole 700 can extend in any suitable direction, including but not limited to extending along the rotation axis PP.

[0047] In practical applications, users (e.g., clinicians) can rotate the first component 100 and / or the second component 200 to adjust the positions of the first and second external components as needed. During this process, one end 301 of the slider 300 can slide along the helical groove 210. Since the helical groove 210 surrounds the rotation axis PP at least once, the first component 100 and the second component 200 can each rotate 360 ​​degrees, allowing the first and second external components to be rotated to any suitable position.

[0048] In summary, the rotary joint mechanism provided in this embodiment allows the first component 100 and the second component 200 to rotate 360 ​​degrees around the rotation axis PP. Thus, according to usage requirements, the rotary joint mechanism allows components connected to the first component 100 and the second component 200 (e.g., the first external connector and the second external connector) to rotate to any desired position, thereby facilitating operation and improving the user experience. Furthermore, due to the limiting effect of the first spiral groove wall 211 and the second spiral groove wall 212 of the spiral groove 210, the slider 300 cannot rotate continuously in one direction, thus preventing the wire harness from tangling and breaking, resulting in high reliability of the rotary joint mechanism.

[0049] Depending on the structure of the wire harness, the angle at which the helical groove 210 rotates around the rotation axis PP can vary. Generally, the angle at which the helical groove 210 rotates around the rotation axis PP only needs to be slightly greater than 360 degrees. This allows both the first component 100 and the second component 200 to rotate 360 ​​degrees around the rotation axis PP respectively, without causing the wire harness to become entangled and broken due to excessive rotation angle. Furthermore, the helical groove 210 occupies a small space, thus allowing for a compact structure of the component it is located in.

[0050] For example, a guide groove 110 may be provided on the other of the first component 100 and the second component 200. The guide groove 110 may extend along the rotation axis PP. The other end 302 of the slider 300 may be inserted into the guide groove 110. When the first component 100 and the second component 200 rotate relative to each other, one end 301 of the slider 300 may slide along the helical groove 210, and the other end 302 of the slider 300 may slide along the guide groove 110. Thus, when the first component 100 and the second component 200 rotate relative to each other, the slider 300 will not cause the first component 100 and the second component 200 to change position along the rotation axis PP.

[0051] A helical groove 210 may be provided on one of the wall of the insertion hole 160 and the outer peripheral surface of the rotating shaft 230. A guide groove 110 may be provided on the other of the wall of the insertion hole 160 and the outer peripheral surface of the rotating shaft 230. In the embodiment shown in the figure, the helical groove 210 may be provided on the second component 200, and the guide groove 110 may be provided on the first component 100. Specifically, the helical groove 210 may be provided on the outer peripheral surface of the rotating shaft 230, and the guide groove 110 may be provided on the wall of the insertion hole 160. If the helical groove 210 is provided on the wall of the insertion hole 160, the machining equipment (e.g., a cutting tool) needs to penetrate deep into the insertion hole 160, thus increasing the machining difficulty. Especially for rotating joint mechanisms used in medical devices, their external dimensions are usually small, so the size of the insertion hole 160 is even smaller, making the machining of the helical groove 210 even more difficult. Therefore, providing the helical groove 210 on the outer peripheral surface of the rotating shaft 230 can reduce the machining difficulty.

[0052] Exemplarily, the first component 100 may include an outer sleeve 120 and a rotating member 130. The rotating member 130 may be inserted into the outer sleeve 120 by any suitable means such as plugging. The rotating member 130 may be fitted between the outer sleeve 120 and the second component 200. An insertion hole 160 may be formed within the rotating member 130. At least a portion of the guide groove 110 may be provided on the outer sleeve 120. The rotating member 130 may be fixed between the outer sleeve 120 and the second component 200 in a direction perpendicular to the rotation axis PP. By configuring the first component 100 as a structure including multiple components (e.g., the outer sleeve 120 and the rotating member 130), corresponding structural and / or material settings can be made according to the surrounding components to which each component is connected and the functional effect it plays. For example, the rotating member 130 may be configured to have low friction with the second component 200, thereby making rotation easier and reducing wear on both, thus increasing service life. A first connector 500 may be connected to the outer sleeve 120.

[0053] Exemplarily, the outer sleeve 120 may be provided with a groove 121. The groove 121 may extend along the rotation axis PP. The rotating member 130 may include a bushing 140. The bushing 140 may be provided with an opening 150. Thus, the bushing 140 may be generally C-shaped. The opening 150 may extend in a direction perpendicular to the rotation axis PP. The opening 150 may communicate between the groove 121 and the helical groove 210. The groove 121 and the opening 150 may be configured as a guide groove 110. The slider 300 may pass through the opening 150. The inner circumferential surface of the bushing 140 may have a relatively smooth structure, thereby reducing its friction with the second member 200. With this configuration, the slider 300 can drive the outer sleeve 120 and the bushing 140 to rotate synchronously, and the outer sleeve 120 and the bushing 140 may not require other connecting structures.

[0054] Exemplarily, the opening 150 may include a large segment 151 and a small segment 152. The large segment 151 may face the groove 121. The small segment 152 may face the spiral groove 210. The groove 121, the large segment 151, the small segment 152, and the spiral groove 210 may be connected sequentially. A stepped surface 153 may be formed between the large segment 151 and the small segment 152. The stepped surface 153 may face the groove wall of the groove 121. The slider 300 may include a head 310 and a tail 320. The tail 320 may be connected to the head 310 by any suitable method such as welding, connecting with a connector, or integral molding. The head 310 of the slider 300 may abut between the groove wall of the groove 121 and the stepped surface 153. With this configuration, the slider 300 can be fixed in a direction perpendicular to the rotation axis PP, thereby preventing it from moving in a direction perpendicular to the rotation axis PP. The tail 320 of slider 300 can pass through the small segment 152. The other end 302 of slider 300 can be the head 310 of slider 300 and the portion of tail 320 passing through the small segment 152. One end 301 of slider 300 can be the end of tail 320 facing away from head 310. In this way, the end of tail 320 facing away from head 310 can be inserted into helical groove 210.

[0055] For example, the rotating component 130 may include two rolling bearings. The slider 300 may be positioned between the two rolling bearings along the rotation axis PP. The rolling bearings can reduce friction between themselves and the second component 200, thereby requiring less effort to rotate, and reduce wear on both, thus increasing their service life.

[0056] Exemplarily, a first mounting groove 220 may also be provided on one of the first component 100 and the second component 200. That is, the first mounting groove 220 and the spiral groove 210 may be provided on the same part of the first component 100 and the second component 200. The first mounting groove 220 allows one end 301 of the slider 300 to pass through, thereby allowing one end 301 of the slider 300 to be mounted to the spiral groove 210 from the outside. Along the rotation axis PP direction, the first mounting groove 220 may be configured as an opening structure connecting one or both ends of the spiral groove 210, that is, to facilitate the installation of the slider 300 in the spiral groove 210, along the rotation axis PP direction, the first mounting groove 220 is configured as an opening structure provided from the end face of the second component 200. In the embodiment shown in the figure, the second spiral groove wall 212 of the spiral groove 210 is closer to the outside of the second component 200. The first mounting groove 220 may connect the second spiral groove wall 212 between the second spiral groove wall 212 and the outside of the second component 200. With this configuration, one end 301 of the slider 300 can slide from the outside into the spiral groove 210 through the first mounting groove 220, and slide out of the spiral groove 210 to the outside through the first mounting groove 220. In this way, the slider 300 can be easily installed and removed.

[0057] Exemplarily, a second mounting groove 170 may also be provided on the other of the first component 100 and the second component 200. That is, the second mounting groove 170 and the guide groove 110 may be provided on the same part of the first component 100 and the second component 200. The second mounting groove 170 allows the other end 302 of the slider 300 to pass through, thereby allowing the other end 302 of the slider 300 to be mounted to the guide groove 110 from the outside. Along the rotation axis PP direction, the second mounting groove 170 may be configured as an opening structure connecting one or both ends of the guide groove 110. That is, to facilitate the installation of the slider 300 in the guide groove 110, along the rotation axis PP direction, the second mounting groove 170 is configured as an opening structure provided from the end face of the first component 100. With this configuration, the other end 302 of the slider 300 can slide into the guide groove 110 from the outside through the second mounting groove 170, and slide out of the guide groove 110 from the outside through the second mounting groove 170. In this way, the slider 300 can be easily installed and removed.

[0058] For example, along the rotation axis PP, the length of the end 301 of the slider 300 that mates with the helical groove 210 can be less than the length of the other end 302 of the slider 300 that mates with the guide groove 110. By shortening the length of the end 301 of the slider 300, the width of the helical groove 210 can be reduced, thereby reducing the space occupied by the helical groove 210 and making the structure of the component it occupies more compact. Conversely, by increasing the length of the other end 302 of the slider 300, the guiding effect of the guide groove 110 can be improved.

[0059] Exemplarily, the rotary joint mechanism may also include a friction assembly. The friction assembly includes, but is not limited to, a sliding friction plate or the first thrust bearing assembly 410 described below. The friction assembly may be sleeved on the rotating shaft 230. Along the rotation axis PP, the friction assembly may be connected to the end of the first component 100. Corresponding structural and / or material settings may be made for the friction assembly. For example, the friction assembly may be configured to have low friction between it and the end of the first component 100, thereby reducing rotational effort and wear on both, thus increasing service life.

[0060] For example, the second component 200 may include a rotating shaft 230 and a base 240. The base 240 may protrude outward from the outer peripheral surface of the rotating shaft 230. The rotating shaft 230 may be inserted into the first component 100. A helical groove 210 or a guide groove 110 may be provided on the outer peripheral surface of the rotating shaft 230. Along the rotation axis PP, a friction assembly may be connected between the base 240 and one end of the first component 100. With this configuration, the friction assembly will not move along the rotation axis PP.

[0061] Exemplarily, the friction assembly may include a first thrust bearing assembly 410. The rotating joint mechanism may also include a second thrust bearing assembly 420, a pressure plate 430, and an adjusting member 440. Along the rotation axis PP, the pressure plate 430 and the base 240 may be located on opposite sides of the first component 100. The second thrust bearing assembly 420 may be sleeved on the rotating shaft 230. Along the rotation axis PP, the second thrust bearing assembly 420 may be connected between the pressure plate 430 and the other end of the first component 100, that is, the first thrust bearing assembly 410 and the second thrust bearing assembly 420 are respectively located at both ends of the rotating component 130. The adjusting member 440 can adjust the force of the pressure plate 430 pressing the first thrust bearing assembly 410 and the second thrust bearing assembly 420, thereby adjusting the rotational torque between the first component 100 and the second component 200. In this way, the user's feel during rotation is higher, and the user experience is better. The adjusting member 440 includes, but is not limited to, a gripper or abutment. When the first external component and / or the second external component, etc., apply a large bending moment to the rotating joint mechanism, the first thrust bearing assembly 410 and the second thrust bearing assembly 420 can ensure that the frictional force of rotation is not too large, thereby maintaining the smoothness of rotation.

[0062] For example, the adjusting member 440 may include a threaded fastener. A threaded hole 231 may be provided on the end of the rotating shaft 230 facing the pressure plate 430. The threaded fastener can pass through the pressure plate 430 and thus be threaded into the threaded hole 231. The threaded fastener includes, but is not limited to, screws or bolts. By adjusting the torque of the threaded fastener, the force with which the pressure plate 430 presses against the second thrust bearing assembly 420 can be adjusted. This configuration facilitates torque adjustment and allows for easy installation and removal of the pressure plate 430.

[0063] For example, the helical groove 210 can be provided on the outer peripheral surface of the rotating shaft 230. Along the rotation axis PP direction, the threaded hole 231 and the helical groove 210 can be spaced apart. This arrangement can prevent the threaded fastener from interfering with the slider 300, thereby avoiding any impact on rotation.

[0064] For example, the first thrust bearing assembly 410 may include a first thrust bearing 411 and a first support plate 412. Both the first thrust bearing 411 and the first support plate 412 can be sleeved on the rotating shaft 230. Along the rotation axis PP, the base 240, the first thrust bearing 411, the first support plate 412, and the first component 100 can be connected in sequence. In order to allow the first thrust bearing 411 to bear axial load, the first support plate 412 needs to meet certain requirements for surface finish, flatness, and hardness to prevent the first thrust bearing 411 from directly contacting the bushing 140 and affecting the rotation of the thrust bearing. Furthermore, it is necessary to prevent the first thrust bearing 411 from getting stuck in the gaps between the guide groove 110, the outer sleeve 120, and the rotating component 130.

[0065] For example, the second thrust bearing assembly 420 may include a second thrust bearing 421 and a second support plate 422. Both the second thrust bearing 421 and the second support plate 422 can be sleeved on the rotating shaft 230. Along the rotation axis PP, the pressure plate 430, the second thrust bearing 421, the second support plate 422, and the first component 100 can be connected sequentially. To ensure the second thrust bearing 421 can withstand axial loads, the second support plate 422 needs to meet certain surface finish, flatness, and hardness requirements to prevent direct contact between the second thrust bearing 421 and the bushing 140, which could affect the rotation of the thrust bearing. Furthermore, it prevents the second thrust bearing 421 from getting stuck in gaps such as the guide groove 110, the outer sleeve 120, and the rotating component 130.

[0066] Exemplarily, the first connector 500 may include a first annular disk 510. The first annular disk 510 may protrude outward from the outer periphery of the first component 100. Specifically, the first annular disk 510 may protrude outward from the outer periphery of the outer sleeve 120. The first annular disk 510 may surround a rotation axis PP. The first annular disk 510 may be connected to the first outer component by any suitable means such as a connector. Exemplarily, the first annular disk 510 may be provided with a first annular disk through hole 511. Connectors such as screws 512 may pass through the first annular disk through hole 511, thereby connecting the first annular disk 510 and the first outer component. The second connector 600 may include a second annular disk 610. The second annular disk 610 may protrude outward from the outer periphery of the second component 200. Specifically, the second annular disk 610 may protrude outward from the outer periphery of the base 240. The second annular disk 610 may surround a rotation axis PP. The second annular disk 610 may be connected to the second outer component by any suitable means such as a connector. For example, the second annular disk 610 may be provided with a second annular disk through hole 611. Screws or other connecting parts can pass through the second annular disk through hole 611, thereby connecting the second annular disk 610 and the second external component. The first annular disk 510 may be parallel to the second annular disk 610. This configuration results in a simpler structure for the rotary joint mechanism, facilitating its manufacturing. Furthermore, the rotary joint mechanism has a smaller dimension along the rotation axis PP, allowing it to be applied in flat spaces.

[0067] For example, such as Figure 8-10 As shown, the first connector 500 may include a first bracket 520. One end of the first bracket 520 may be connected to the first component 100. Specifically, one end of the first bracket 520 may be connected to the outer sleeve 120. The other end of the first bracket 520 may be connected to the first outer component by any suitable means such as a connector. For example, a first bracket through hole 521 may be provided on the other end of the first bracket 520. A screw or other connector may pass through the first bracket through hole 521, thereby connecting the other end of the first bracket 520 and the first outer component. The second connector 600 may include a second bracket 620. One end of the second bracket 620 may be connected to the second component 200. Specifically, one end of the second bracket 620 may be connected to the base 240. The other end of the second bracket 620 may be connected to the second outer component by any suitable means such as a connector. For example, a second bracket through hole 621 may be provided on the other end of the second bracket 620. A screw or other connector may pass through the second bracket through hole 621, thereby connecting the other end of the second bracket 620 and the second outer component. This design results in a simpler structure for the rotary joint mechanism, making it easier to manufacture. Furthermore, the rotary joint mechanism has a smaller dimension along the direction perpendicular to the rotation axis PP, allowing it to be applied in slender spaces.

[0068] The above only describes Figure 8-10 The embodiments shown are similar to Figure 1-7 The differences between the embodiments shown are for Figure 8-10 The embodiments shown are similar to Figure 1-7 The same or similar components shown in the embodiments are referred to by the same reference numerals, and for the sake of brevity, these same or similar components will not be described in detail herein.

[0069] The following exemplarily provides an installation procedure for a rotary joint mechanism. First, the first thrust bearing assembly 410 can be fitted onto the rotating shaft 230. Then, the rotating member 130 can be fitted onto the rotating shaft 230. Next, the outer sleeve 120 can be fitted onto the rotating member 130. Then, one end 301 and the other end 302 of the slider 300 can be slid into the helical groove 210 and the guide groove 110, respectively. Then, the second thrust bearing assembly 420 can be fitted onto the rotating shaft 230. Finally, the pressure plate 430 can be placed on the second thrust bearing assembly 420 and fixed to the rotating shaft 230 with threaded fasteners. It should be noted that the rotary joint mechanism does not necessarily have to be installed according to this procedure. Depending on the actual needs, the order of some installation steps can be changed, as long as successful installation is possible.

[0070] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0071] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0072] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0073] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0074] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A revolute joint mechanism characterized by, The rotation joint mechanism comprises: a first component; a second component, which is inserted into the first component to be rotatable relative to the first component about a rotation axis, one of the first component and the second component being provided with a helical groove surrounding the rotation axis for at least one turn; a slider, one end of which is inserted into the helical groove, and the other end of which is connected to the other one of the first component and the second component; the one end of the slider slides along the helical groove when the first component and the second component rotate relative to each other. The other one of the first component and the second component is provided with a guide groove extending along the rotation axis, the other end of the slider is inserted into the guide groove, and the other end of the slider slides along the guide groove when the first component and the second component rotate relative to each other.

2. The revolute joint mechanism of claim 1, wherein, The first component comprises an outer sleeve and a rotating member inserted into the outer sleeve, the rotating member is sleeved between the outer sleeve and the second component, and at least part of the guide groove is arranged on the outer sleeve.

3. The revolute joint mechanism of claim 2, wherein, The outer sleeve is provided with a sliding groove, and the rotating member comprises a shaft sleeve provided with an opening communicating between the sliding groove and the helical groove, the sliding groove and the opening are configured as the guide groove.

4. The revolute joint mechanism of claim 3, wherein The opening comprises a large-size section facing the sliding groove and a small-size section communicating between the large-size section and the helical groove, a step surface is formed between the large-size section and the small-size section, the slider comprises a head and a tail connected to the head, the head abuts between the groove wall of the sliding groove and the step surface, the tail passes through the small-size section, and the one end of the slider is an end of the tail away from the head.

5. The rotary joint mechanism of claim 4, wherein The rotating member comprises two rolling bearings, and the slider is located between the two rolling bearings in the direction of the rotation axis.

6. The revolute joint mechanism of claim 3, wherein, 7. The rotation joint mechanism according to claim 2, wherein the one of the first component and the second component is provided with a first mounting groove allowing the one end of the slider to be mounted to the helical groove from the outside; and / or the other one of the first component and the second component is provided with a second mounting groove allowing the other end of the slider to be mounted to the guide groove from the outside. In the direction of the rotation axis, the length of the one end of the slider cooperating with the helical groove is less than the length of the other end of the slider cooperating with the guide groove.

8. The rotary joint mechanism of claim 2, wherein The rotation joint mechanism further comprises a friction assembly sleeved on the second component, and the friction assembly is connected to an end of the first component in the direction of the rotation axis.

9. The rotary joint mechanism of claim 2, wherein The second component comprises a rotating shaft and a base protruding outward from the outer circumferential surface of the rotating shaft, the rotating shaft is inserted into the first component, the helical groove or the guide groove is arranged on the outer circumferential surface of the rotating shaft, and the friction assembly is connected between the base and one end of the first component in the direction of the rotation axis.

10. The rotary joint mechanism of claim 9, wherein, ​ 11. The rotary joint mechanism of claim 10, wherein, The friction assembly comprises a first thrust bearing assembly, the rotary joint further comprises a second thrust bearing assembly, a pressing plate and an adjusting member, the pressing plate is located on both sides of the first part along the direction of the rotation axis and is connected to the base, the second thrust bearing assembly is sleeved on the rotating shaft and is connected between the pressing plate and the other end of the first part along the direction of the rotation axis, and the adjusting member is used for adjusting the force with which the pressing plate presses the first thrust bearing assembly and the second thrust bearing assembly.

12. The rotary joint mechanism of claim 11, wherein, The adjusting member comprises a threaded fastener, one end of the rotating shaft facing the pressing plate is provided with a threaded hole, and the threaded fastener passes through the pressing plate and is screwed to the threaded hole.

13. The rotary joint mechanism of claim 12, wherein, The helical groove is arranged on the outer circumferential surface of the rotating shaft, and the threaded hole is spaced apart from the helical groove along the direction of the rotation axis.

14. The rotary joint of claim 11, wherein The first thrust bearing assembly comprises a first thrust bearing and a first support plate, and the base, the first thrust bearing, the first support plate and the first part are sequentially connected along the direction of the rotation axis; and / or The second thrust bearing assembly comprises a second thrust bearing and a second support plate, and the pressing plate, the second thrust bearing, the second support plate and the first part are sequentially connected along the direction of the rotation axis.

15. The rotary joint mechanism of claim 2, wherein The first part is provided with a socket, the socket wall is provided with the guide groove, the rotating shaft is inserted into the socket, and the outer circumferential surface of the rotating shaft is provided with the helical groove.

16. The rotary joint mechanism of claim 1, wherein The rotary joint further comprises a first connecting member and a second connecting member, the first connecting member is connected to the first part and is used for connecting a first external connecting member, and the second connecting member is connected to the second part and is used for connecting a second external connecting member.

17. The rotary joint of claim 16, wherein The first connecting member comprises a first annular disc protruding outward from the outer circumferential side of the first part and surrounding the rotation axis, the first annular disc is used for connecting the first external connecting member, the second connecting member comprises a second annular disc protruding outward from the outer circumferential side of the second part and surrounding the rotation axis, the second annular disc is used for connecting the second external connecting member, and the first annular disc is parallel to the second annular disc; or The first connecting member comprises a first support, one end of the first support is connected to the first part, and the other end is used for connecting the first external connecting member, the second connecting member comprises a second support, one end of the second support is connected to the second part, and the other end is used for connecting the second external connecting member.

18. A medical device, characterized by The rotary joint comprises the rotary joint according to any one of claims 1-17.

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